If a person was to deliberately debate about whether or not to commit a mortal sin, would they be mortally sinning by the inner act of debating, or would they have to consent to actually doing or planning to do the gravely sinful act?
I will give you an example. Let’s say for the moment that I was debating whether or not to skip Easter Mass. I deliberately was debating whether or not to go, but I hadn’t yet decided I wouldn’t go. After some deliberation, I conclude that I will after all go to Mass on Easter. Would I have committed a mortal sin in that instance?